Car-door signal



Sept. 10, 1929. MlYAQKA 1,727,838

' cm noon SIGNAL Filed Dec. 12. 1927 Inventor Yataro M/yao/m Attorney Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

YATARO MIYAOKA, OF SPOKANE, WASHINGTON.

CAR-DOOR SIGNAL.

Application filed December 12, 1927. Serial No. 239,400.

for employment with longitudinally sliding doors of street railway cars for indicating open and closed positions of the doors with which they are used. With such doors equipped with the device of my invention,

when the car door is opened for the purpose of receiving or discharging passengers, the signal is displayed for a warning to motorists and others so that they will not interfere with the passengers boarding the car or alighting therefrom.

The signal is of the vertically swinging type and is automatically illuminated when swung to displayed position, and means, actuated from the opening and closing movement of the door, are employed for operating the signal through an arc of 90 degrees to displayed position and to retracted position respectively.

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully set forth and claimed. In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention wherein the parts are combined and arranged according to the best mode I have thus far devised for the practical application of the principles of my invention. \Vhile I have illustrated the doors and signals at the sides of the ends of the car, it will be apparent that the signals may be used with the sliding doors when the latter are located at other points of the car, and changes and alterations may be made in the exemplified structure within the scope of my claims without departing from the principles of my invention.

Figure 1 is a perspective view at the rear end of a street railway car showing an exit door open and displaying its stop signal in horizontal position, and an entrance door,

closed, and with its signal in retracted position.

Figure 2 is a view in side elevation of a portion of the car with its closed door and retracted signal.

Figure 3 is a view'asseen at line 83 of Flgure 2 showing by full and dotted lines the two positions ofthe signal.

Figure 43 is a View of a section ofa split orhalved bracketfor the signal arm to swing Figure 5is a perspective view of the op eratingibladefor thesignalarm, said blade being attached to and carried by the door.

Figure 6 is a perspective view ofthe bearing bracket for theswinging arm of the signa I -Figure 7 is a perspective view of the crosshead of the signal arm, said head forming the pivot or hinge end of the arm.

Figure 8 is a longitudinal sectional detail View of the cross-head with a portion of the operating blade therein.

Figure 9 is a longitudinal sectional view of the signal arm with lamp casing etc.

Figure 10 is aperspective View of the hinged door for the lamp casing.

In order that the general arrangement and relation of parts may readily be understood I have indicated a portion of the railway car as C which is equipped with two doors D and D for exit and entrance. These doors, in opening and closing, slidelongitudinally of the car, and the door step S co-acts with the doors to fold and unfold when the doors are I closed and opened. I

In Figure 1 the door'D is opened and its signal is swung down to horizontal position as a warning to motorists'and others that passengers are to alight, while the door D is closed with its signal in upright, retracted position. As the signal swings to horizontal positionit is automatically illuminated and as it is swung back to upright, retracted position the electric lamp or bulb 7 may be extinguished.

Each doo'r'is provided with an actuating blade 1 fashioned of a flat metallic plate that is twisted in the form of a spiral or screw thread. The blade isprovided with an angular ofiset 2 and an attaching flange 3 for the screws and bolts 4 by means of which the blade is attached to the door. The blade extends longitudinally of the car and parallel with the line of movement of the sliding door, and co-acts with a stationary part attached to or carried by the car C.

The signal carried by the car comprises a tubular arm or pipe 5 having at its free end a lamp casing 6 for the bulb 7 therein and the casing is provided with a lens 8 which may be of the bulls-eye type and colored as red. The lamp casing is provided with a hinged door 9 in which a glass panel 10 is provided and as the lamp casing swings to dotted position in Figure 3, not only is the red lens caused to direct light rays to the rear as a warning signal, but the rays of light from the bulb 7 pass through the glass panel 10 to illuminate the unfolded or lowered door and located in said slot, whereby the arm is swung as the door is slid.

In testimony whereof I atfix my signature.

YATARO MIYAOKA.

step S of the car forthe convenience of the passengers. v V

At the hinged or pivoted end of the swinging arm 5 is fashioned a cross-head that is made up of a T-head 11 on the arm:5 and v a sleeve 12 fixed within the T-head and form- The cross head is journaled in a split bracket attached to the car, said bracket comprising duplicate sections 15 and 16 with hearing flanges 17 and journal holes 18 that are slipped over the opposite ends of the cross head before the split bracket is attached as a unit to the car. The flanges 17 fit up snugly against the opposite ends of the tubular T-head and this T-head prevents displacement of the hinged or pivoted crosshead.

As the free end of the signal arm swings down to horizontal position the lamp or bulb 7 is illuminated through contact of the stationary contacts '19 with the movable contacts 20 of the T-head and the wires 21 of the arm and 22 of the bracket are properly connected to insure the correct lamp circuit for illuminating the lamp casing 6 at the proper time. The wires carried by the'signal extend through the hollow or tubular arm 5 and the T-head is provided with an annular space 23 around the tubularjournal 12 to accommodate the electric wires.

Having thus fully described my invention, what I-claim as new and desire to secure by Letters Patent is I 1. The combination with a journalbracket, of a signal, arm having a cross-head rotatable in the bracket and a tubular journal memberrigidwith the cross head, a sliding door, anoperating blade carried by the 

